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Susan Colbourn is an international historian whose research focuses on transatlantic relations, nuclear weapons, and the global Cold War. At present, she is a Henry Chauncey Jr. '57 postdoctoral fellow at International Security Studies at Yale University.

Her current book project examines the rise and fall of the intermediate-range nuclear force arms race – the struggle over the so-called Euromissiles – and its impact on the Atlantic Alliance. Entitled Euromissiles: A Transatlantic History, it considers the strategic, political, military, and cultural impacts of the often contentious transatlantic debates over the Euromissiles.

Susan received her Ph.D. in History from the University of Toronto in spring 2018. Prior to her doctoral studies, she received an MA from the London School of Economics and Political Science and an Hon. BA from Trinity College at the University of Toronto.

She tweets about history and politics at @secolbourn and co-edits a blog on Canadian international history, Canadian Eyes Only.